%0 Journal Article
%A N. V. Medvedev
%T Periodic solutions of differential equations in a Banach space
%J Doklady Akademii Nauk
%D 1969
%P 542-545
%V 184
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1969_184_3_a8/
%G ru
%F DAN_1969_184_3_a8